| 单词 | sidereal year |
| 释义 | > as lemmassidereal year sidereal year n. Astronomy the interval between successive passes of the sun past the same point relative to the fixed stars; the time taken by the earth to orbit the sun once and reach the same position relative to the fixed stars.A sidereal year is about 365d 6h 9m 10s. ΚΠ 1675 E. Sherburne in tr. M. Manilius Sphere 162 25579 Sidereal years, are equal to 25580 Equinoctial years. 1715 tr. D. Gregory Elements Astron. I. ii. §11. 242 The Astronomic [year] is also twofold,..namely, the Sydereal and Tropical. The Sydireal Year..is 365 Days, 6 Hours, and 10 Minutes nearly. 1950 Colloques Internat. du C.N.R.S. XXV. Constantes Fondamentales de l'Astronomie..129 The unit adopted should be the sidereal year at 1900.0. 2005 L. Holford-Strevens Hist. Time ii. 21 Owing to precession, the tropical year is somewhat shorter than the sidereal year. < as lemmas |
| 随便看 |
|
英语词典包含1132095条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。